(CNN) -- When evidence pointed to Osama bin Laden and al Qaeda behind the attacks of September 11, 2001, the United States, with other nations, retaliated by bombing areas of Afghanistan, where the Taliban regime supported the terrorists.

Watch some of the video from the first few months of the war in Afghanistan:

U.S. begins military strikes in AfghanistanThe U.S. and Great Britain begin bombing of al Qaeda targets in Afghanistan on October 7, 2001.Watch the video

2001 airstrike near Tora Bora A B-52 conducts airstrikes in the White Mountains near Tora Bora, Afghanistan, on December 7, 2001.Watch the video

Helicopters patrol Afghanistan in 2002Helicopters patrol during Operation Anaconda, the largest military battle against Taliban and al Qaeda forces in 2002. Watch the video

Bush's 2001 warning to terrorists The day after the 9/11 bombings, President Bush warns that there will be no distinction made between terrorists and those who harbor them.Watch the video